Caltrain Standard Specifications
SECTION 17250
FIBER OPTIC CABLE DISTRIBUTION SUBSYSTEM
PART 1- GENERAL
1.01
1.02
DESCRIPTION
A.
Section includes requirements for fiber optic cable and associated passive
components to provide a complete fiber optic structured cable system for station
communications
B.
Active components such as media converters and network switches are specified
in Sections related to individual station communications subsystems.
REFERENCE STANDARDS
A.
B.
C.
American National Standards Institute (ANSI):
1.
ICEA S-87-640
Fiber Optic Outside Plant Communications
Cable
2.
TIA-455-177, FOTP-177
Optical Fibers Part 1-43: Measurement
Methods and Test Procedures - Numerical
Aperture
ASTM International (ASTM):
1.
D1248 Specification for Polyethylene Plastic Extrusion Material for Wire
and Cable
2.
E814
Code of Federal Regulations (CFR):
1.
D.
Test Method for Fire Test of Through - Penetration Fire Stop
7CFR1755.900 RUS Specification for Filled Fiber Optic Cables
Telecommunications Industry Association (TIA)/ Electronics Industries Alliance
(EIA):
1.
TIA/EIA 455
2.
TIA/EIA 455-3, FOTP-3 Procedure to Measure Temperature Cycling
Effects on Optical Fibers, Optical Cable, and
Other Passive Fiber Optic Components
3.
TIA 455-13, FOTP-13
September 30, 2011
Standard Test Procedure for Fiber Optic Fiber
Cables, Transducers, Sensors. Connecting and
Terminating Devices and other Fiber Optic
Components
Visual and Mechanical Inspection of Fiber Optic
Components, Devices, and Assemblies
17250 -1
FIBER OPTIC CABLE DISTRIBUTION SUBSYSTEM
Caltrain Standard Specifications
4.
TIA/EIA 455-25, FOTP-25
Impact Testing of Fiber Optic Cables and
Cable Assemblies
5.
TIA 455-33, FOTP-33-B
Optical Fiber Cable Tensile Loading and
Bending Test
6.
TIA/EIA 455-37, FOTP-37
Low or High Temperature Bend Test for
Fiber Optic Cable
7.
TIA/EIA 455-41, FOTP-41
Compressive Loading Resistance of Fiber
Optic Cables
8.
TIA 455-78, FOTP-78-B
Optical Fibres: Part 1-40, Measurement
and Test Procedures - Attenuation
9.
TIA 455-133, FOTP-133
Optical Fibres - Part 1-22: Measurement
Methods and Test Procedures - Length
Measurement
10.
TIA/EIA 455-81, FOTP-81
Compound Flow (Drip) Test for Filled Fiber
Optic Cable
11.
TIA 455-82, FOTP-82
Fluid Penetration Test for Fluid-Blocked
Fiber Optic Cable
12.
TIA/EIA 455-85, FOTP-85A
Fiber Optic Cable Twist Test
13.
TIA/EIA 455-88, FOTP-88
Fiber Optic Cable Bend Test
14.
TIA 455-91, FOTP-91
Fiber Optic Cable Twist-Bend Test
15.
TIA 455-104, FOTP-104
Fiber Optic Cable Cyclic Flexing Test
16.
TIA/EIA 455-171, FOTP-171
Attenuation by Substitution Measurement
- for Short-Length Multimode Gradedlndex and Single-Mode Optical Fiber Cable
Assemblies
17.
TIA/EIA 455-181, FOTP-181
Lighting Damage Susceptibility Test for
Optic Cables with Metallic Components
18.
TIA/EIA-4720000-A
Generic Specification for Fiber Optic Cable
19.
TIA-492AAAA-A
Detail
Specification
for
62.5-um
Core
Diameter/125-um Cladding Diameter Class Ia
Graded-Index Multimode Optical Fibers
20.
TIA 492-CAAB
Detail Specification for Class IVa Dispersion Unshifted Single-Mode Optical Fibers with Low
Water Peak
21.
TIA 526-7 - OFSTP-7
Measurement of Optical Power Loss of Installed
Single-Mode Fiber Cable Plant
September 30, 2011
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FIBER OPTIC CABLE DISTRIBUTION SUBSYSTEM
Caltrain Standard Specifications
1.03
22.
TIA 526-14 OFSTP-14
Optical Power Loss Measurement of Installed
Multimode Fiber Cable Plant
23.
TIA 568.3
Commercial
Building
Telecommunications
Cabling Standard, components of fiber optic
cable systems.
24.
TIA-598
Optical Fiber Cable Color Coding
25.
TIA/EIA-606
Administration Standard for Telecommunications
Infrastructure
DESIGN CONSIDERATIONS
A.
Station Communications shall deploy a fiber optic cable distribution as follows:
1.
Single-mode fiber optic cable shall be deployed where subsystem
products are available. Single-mode fiber optic cable shall be deployed
on the station facility and platform grounds inside CER cabinets and
between CER and the DC. Single mode fiber optic cable shall also be
deployed between stations CER’s and between station CER’s and wayside
systems not located on station or platform grounds.
2.
Fiber optic cable shall serve as the backbone medium between the
station communications equipment room (CER) and communication
distribution cabinet (DC). The fiber cable shall be placed in a physical
ring backbone topology. Backbone fiber cables shall consist of 24-strand
single-mode fiber cabling, which shall be of outside plant design for
outdoor applications and plenum design for indoor applications. All
fibers shall be terminated, tested and certified, whether working or spare
(dark).
3.
There will be no intermediate cross-connect, patching, consolidation
point, or other termination of the fiber optic cable between the CER and
the DC.
4.
The fiber optic backbone will be configured in a physical ring topology.
The CER and each field communications distribution cabinet will have
physically redundant entrances to facilitate the ring topology.
5.
To facilitate future integrated (fiber direct) subsystem devices, singlemode fiber optic backbone cable will be deployed. The minimum cable
size will be 24-strand cable.
6.
Upon receiving the fiber cable shipment reels at the site, the Contractor
shall conduct all necessary testing to verify and demonstrate to the
Engineer that the shipped fiber cables are acceptable. All deficient or
rejected fiber cabling equipment shall be rejected and returned back to
the vendor for substitution.
7.
Use of Multi-mode fiber cable and the associated equipment solutions
shall be avoided and could only be permitted as an exception (due to
September 30, 2011
17250 -3
FIBER OPTIC CABLE DISTRIBUTION SUBSYSTEM
Caltrain Standard Specifications
lack of adequate substitute based on single-mode fiber solution) and
only if approved by the Engineer.
1.04
SUBMITTALS
A.
Refer to Section 17000, Basic Communications Technical Requirements, for
related and additional submittal requirements.
B.
Submittals shall consist of a complete design description, including detailed
drawings, specifications, and submittals of all subsystems and elements within
the subsystem. Each calculation, test procedure, final drawing and submittal
shall be reviewed and signed by a BICSI Registered Communications Distribution
Designer (RCDD). For submittals involving engineering design services required
by governing codes and regulations; system design and design calculations shall
be sealed and signed in blue ink by a professional engineer, currently registered
in the State of California, for the discipline involved. The final design document
shall contain sufficient details for construction.
C.
Submittals shall include all materials, equipment, assembly and installation
required to carry out the functions and purposes indicated in the Specifications,
and to make the system suitable for the purpose for which it is intended,
whether or not such materials, equipment, assembly and installation are specially
indicated in the requirements of the Specifications.
D.
Design submittal shall define interfaces between the systems. This includes both
Communications and Signals.
E.
Submit equipment lists including a table or list of model and part numbers for all
proposed equipment and materials to be used for individual subsystems. Include
the expected lead-time for each item while identifying in boldface type the ones
with greater than 30 days. Group table or list for each subsystem with functional
descriptions of equipment or material included.
1.
Quantities by individual work location shall be included.
F.
Submit Product Data Sheets with product information in sufficient detail to
indicate that components meet these Specifications. The product model shall be
indicated explicitly with arrow or underline on the product sheet submitted.
G.
Submit calculations for each fiber optic cable span showing link margin and
system gain.
H.
Schedule: Submit schedule including identification and description of all major
system cutover events or integration activities describing techniques, methods,
duration and procedures.
I.
Submit electrical, mechanical, and network communications block and functional
diagrams with corresponding parts list using current AutoCAD standards.
J.
Submit cable running lists per subsystem. Lists shall identify the size and type of
cable, and identify the termination points of both cable ends. Include cable
termination assignments by fiber strand or copper wire. Specify cable labeling
(tags) for each cable per end.
September 30, 2011
17250 -4
FIBER OPTIC CABLE DISTRIBUTION SUBSYSTEM
Caltrain Standard Specifications
1.05
K.
Submit drawings showing equipment placement within the station. Include floor
or wall profiles showing the location of equipment cabinets. Include vertical
cabinet profiles showing the assigned placement of equipment within the
cabinet. Depict all equipment within a cabinet, whether said equipment is new
or existing.
L.
Manufacturer Qualifications: Submit manufacturer’s qualifications. Include cable
manufacturer’s ISO 9001 Certification Number.
QUALITY ASSURANCE
A.
Materials, design, installation, and testing shall comply with all applicable
Standards included herein. Be familiar with and adhere to the latest editions of
these codes, regulations, specifications and standards.
B.
Work shall meet or exceed the standards and procedures specified.
C.
In the event of conflicts between reference standards, the most stringent
provisions shall apply to the Work of this Section.
D.
Manufacturer Pre-Qualification Requirements:
1.
Obtain Engineer’s approval of cable manufacturers and installers. The
Provide all data required for Engineer evaluation and shall make the
arrangements for any required demonstrations and tests.
2.
Qualifications shall be based on the following criteria:
a.
Past Performance and Experience: The cable manufacturers
shall demonstrate previous successful experience in supplying,
testing and installation of fiber optic cable specified herein.
b.
Quality Assurance Program
c.
i.
The manufacturer of cables, in accordance with the
requirements of these technical specifications, shall have
in place or implement, an effective quality assurance
program adhering to the requirements of ISO 9001 to
ensure purchase control performance.
ii.
The cable manufacturer shall be ISO 9001 certified.
Warranty
i.
September 30, 2011
The manufacturer shall warrant that the design,
material, and workmanship incorporated in each item of
cable shall be of the highest grade and consistent with
the established, and generally accepted standards for
fiber optic cable for transit applications; and that each
such item and every part and component thereof shall
comply with the Specifications.
17250 -5
FIBER OPTIC CABLE DISTRIBUTION SUBSYSTEM
Caltrain Standard Specifications
1.06
ii.
The Contractor shall monitor the manufacturers of the
cable to assure that the Engineer approved Quality
Assurance Program is being closely adhered to and that
the fiber optic cable is being manufactured in
accordance with these specifications.
iii.
If the cable supplier is not the manufacturer of the fiber,
the fiber manufacturer shall be identified.
DELIVERY, HANDLING, AND STORAGE
A.
Packing: Ship cable on non-returnable wooden reels. The diameter of the drum
shall be at least 20 times the diameter of the cable. Ship cable shall be shipped
on reels substantial to withstand reasonable handling and shall be so designed
that the inner end of the cable be accessible, but protected from injury. All ends
of the cable shall be sealed to prevent entrance of moisture and securely
fastened to prevent them from becoming loose during transit.
B.
Marking: Label each reel on the outside flange with the following information:
1.
Manufacturer's name
2.
Contract name and number
3.
Cable identification number
4.
Cable length
5.
Date of manufacture
6.
Copy of the factory test results
PART 2- PRODUCTS
2.01
FIBER OPTIC CABLE
A.
General Fiber Optic Cable Specifications:
1.
All fibers in the cable shall be usable and meet required specifications.
2.
The life expectancy of the cable shall be 25 years for service in a railroad
and transit environment.
3.
The cable shall be designed for installation in underground conduit, wet
or dry environments, including alternating wet and dry conditions.
4.
All fiber optic cable run in conduits or duct banks shall be an accepted
product of the USDA Rural Utilities Service (RUS) 7 CFR 1755.900 and
meet the requirements of ICEA S-87-640.
5.
Each optical fiber shall be sufficiently free of surface imperfections and
inclusions to meet the optical, mechanical, and environmental
requirements of this specification.
September 30, 2011
17250 -6
FIBER OPTIC CABLE DISTRIBUTION SUBSYSTEM
Caltrain Standard Specifications
B.
6.
Each optical fiber shall consist of a germanium-doped silica core
surrounded by a concentric glass cladding. The fiber shall be a matched
clad design.
7.
Each optical fiber shall be proof tested by the fiber manufacturer at a
minimum of 100 kpsi (0.7 GN/m2).
8.
The fiber shall be coated with a dual layer acrylate protective coating.
The coating shall be in physical contact with the cladding surface.
9.
The attenuation specification shall be a maximum value for each cabled
fiber at 23 ± 5 °C on the original shipping reel.
Enhanced Single-mode Optical Fiber for Telecommunications Applications:
1.
The single-mode fiber utilized in the optical fiber cable shall meet ITU
recommendation G.652.D; IEC Standard 60793-2-50 type B.1/G.655G.655A).3; Telcordia GR-20-CORE; ANSI/ICEA S-87-640; and RUS
7CFR1755.900.
2.
Geometry Standards:
3.
a.
Cladding Diameter (µm) = 125.0 ± 0.7
b.
Core-to-Cladding Concentricity (µm) ≤ 0.5
c.
Cladding Non-Circularity ≤ 0.7 %
d.
Mode Field Diameter @ 1550 nm (µm) = 10.3 ± 0.5
e.
Effective Area, Aeff (Characterized): (µm2) = 72
f.
Coating Diameter (µm) = 245 ± 5
g.
Colored Fiber Nominal Diameter (µm) = 242 ± 7
h.
Fiber Curl radius of curvature (m) > 4.0 m
Optical Standards:
a.
Cabled Fiber Attenuation @ 1310 nm (dB/km) ≤ 0.35
b.
Cabled Fiber Attenuation @ 1550 nm (dB/km) ≤ 0.25
c.
Point discontinuity @ 1550 nm (dB) ≤ 0.25
d.
Cable Cutoff Wavelength ( λccf ) (nm) ≤ 1480
e.
Total Dispersion (ps/(nm•km))
1300 nm = ≤ 3.0
1530 - 1565 nm = ≤ 18.0
September 30, 2011
17250 -7
FIBER OPTIC CABLE DISTRIBUTION SUBSYSTEM
Caltrain Standard Specifications
1565 - 1625 nm = ≤ 22.0
4.
f.
Cabled Polarization Mode Dispersion ( ps/km ) ≤ 0.1 max
g.
Water Peak Attenuation @1383+/- 3 nm; ≤ 2.1 dB/km
Environmental and Mechanical Specifications:
a.
Temperature Cycling
-60°C to +85°C
b.
Temperature-Humidity Cycling
c.
Each optical fiber shall be proof tested by the fiber manufacturer
at a minimum of 100 kpsi (0.7 GN/m2).
d.
The fiber shall be coated with a dual layer acrylate protective
coating. The coating shall be in physical contact with the
cladding surface.
e.
Crush Resistance = 10 kN/m (685 Ib/ft) length of cable.
f.
Cable Outside Diameter equal or < 0.65 inch
g.
Weight per 1000 linear foot equal or <160lbs
h.
Minimum Bending Radius:
-10°C to +75°C, 98 % RH
Installation, 15X Diameter
Static, 12X Diameter
5.
September 30, 2011
Cable Construction (Jacketed and Armored, Duct or Burial):
a.
The cable meets the specifications set forth in Bellcore GR-20CORE. Cable is listed by RUS to ICEA S-87-640 – ISO 9001 –
14001 – TL 9000 and shall be approved for use by RUS.
b.
Optical fibers shall be placed inside a loose buffer tube. The
nominal outer diameter of the buffer tube shall be either 2.5 mm
or 3.0 mm. Each buffer tube shall contain up to 12 fibers. The
fibers shall not adhere to the inside of the buffer tube. The
buffer tubes shall be resistant to external forces and shall meet
the buffer tube cold bend and shrink-back requirements of USDA
RUS 7 CFR 1755.900.
c.
Each fiber shall be distinguishable by means of color coding in
accordance with TIA-598. The fibers shall be colored with
ultraviolet (UV) curable inks. Buffer tubes containing fibers shall
be color coded with distinct and recognizable colors in
accordance with TIA-598. Buffer tube colored stripes shall be
inlaid in the tube by means of co-extrusion when required. The
nominal stripe width shall be 1.0 mm. In buffer tubes containing
multiple fibers, the colors shall be stable across the specified
storage and operating temperature range and not subject to
17250 -8
FIBER OPTIC CABLE DISTRIBUTION SUBSYSTEM
Caltrain Standard Specifications
fading or smearing onto each other or into the gel filling
material. Colors shall not cause fibers to stick together.
September 30, 2011
d.
Fillers may be included in the cable core to lend symmetry to the
cable cross-section where needed. Fillers shall be placed so that
they do not interrupt the consecutive positioning of the buffer
tubes. In dual layer cables, any filler shall be placed in the inner
layer. Fillers shall be nominally 2.5 mm or 3.0 mm in outer
diameter.
e.
The central member shall consist of a dielectric, glass reinforced
plastic (GRP) rod. The purpose of the central member is to
provide tensile strength and prevent buckling. The central
member shall be over coated with a thermoplastic when required
to achieve dimensional sizing to accommodate buffer
tubes/fillers.
f.
Each buffer tube shall be filled with a non-hygroscopic, nonnutritive to fungus, electrically non-conductive, homogenous gel.
The gel shall be free from dirt and foreign matter. The gel shall
be readily removable with conventional nontoxic solvents.
g.
Buffer tubes shall be stranded around the dielectric central
member using the reverse oscillation, or "S-Z", stranding
process. Water wellable yarn(s) shall be applied longitudinally
along the central member during stranding.
h.
Two polyester yarn binders shall be applied contra-helically with
sufficient tension to secure each buffer tube layer to the
dielectric central member without crushing the buffer tubes.
The binders shall be non-hygroscopic, non-wicking, and
dielectric with low shrinkage.
i.
For single layer cables, a water swellable tape shall be applied
longitudinally around the outside of the stranded tubes/fillers.
The water swellable tape shall be non-nutritive to fungus,
electrically non-conductive, and homogenous. I t shall also be
free from dirt and foreign matter. For dual layer cables, a
second (outer) layer of buffer tubes shall be stranded over the
original core to form a two layer core. A water swellable tape
shall be applied longitudinally over both the inner and outer
layer. The water swellable tape shall be non-nutritive to fungus,
electrically non-conductive, and homogenous. It shall also be
free from dirt and foreign matter.
j.
Cables shall contain two ripcords under the steel armor for easy
armor removal. Additionally, armored cables that have an inner
sheath shall also contain one ripcord under the inner sheath.
k.
Tensile strength shall be provided by the central member, and
additional dielectric yams as required. The dielectric yams shall
be helically stranded evenly around the cable core.
17250 -9
FIBER OPTIC CABLE DISTRIBUTION SUBSYSTEM
Caltrain Standard Specifications
C.
l.
Cables shall have an inner sheath of Medium Density
Polyethylene (MDPE). The minimum nominal jacket thickness of
the inner sheath shall be 1.0 mm. The inner jacket shall be
applied directly over the tensile strength members (as required)
and water swellable tape. A water swellable tape shall be
applied longitudinally around the outside of the inner jacket.
m.
The armor shall be a corrugated steel tape, plastic-coated on
both sides for corrosion resistance, and shall be applied around
the outside of the water blocking tape with an overlapping seam
with the corrugations in register. The outer jacket shall be
applied over the corrugated steel tape armor. The outer jacket
shall be a MDPE with a minimum nominal jacket thickness of 1.4
mm. The polyethylene shall contain carbon black to provide
ultraviolet light protection and shall not promote the growth of
fungus.
n.
The MDPE jacket material shall be as defined by ASTM D1248,
Type II, Class C, Category 4 and Grades J4, E7 and E8. The
jacket or sheath shall be free of holes, splits, and blisters. The
cable jacket shall contain no metal elements and shall be of a
consistent thickness.
o.
The outer surface of the jacket of each shipping length of cable
shall be permanently identified by printing (in a contrasting
color) descriptive information on the outer surface of the jacket
at intervals of 1500 mm (5 feet) or less. The information shall
include identification (Caltrain Communications System), count
of fibers, fiber type, date of manufacturing (month and year),
manufacturer's part number, manufacturer's name, sequential
meter or foot markings, a telecommunication handset symbol as
required by Section 350G of the National Electrical Safety Code
(NESC), fiber count, and fiber type. The actual length of the
cable shall be within -0/+1 percent of the length markings. The
print color shall be white, with the exception that cable jackets
containing one or more co-extruded white stripes, which shall be
printed in light blue. The height of the marking shall be
approximately 2.5mm.
p.
If the initial marking fails to meet the specified requirements,
i.e., improper text statement, color, legibility, or print interval,
the cable may be remarked using a contrasting alternate color.
The numbering sequence shall differ from the previous
numbering sequence, and a tag shall be attached to both the
outside end of the cable and to the reel to indicate the sequence
of remarking. The preferred remarking color shall be yellow,
with the secondary choice being blue.
Multi-mode Fiber for Local Area Network (LAN) Applications:
1.
September 30, 2011
Multimode fibers shall meet EIA/TIA-492AAAA- "Detail Specification for
62.5-|um Core Diameter/125-um Cladding Diameter Class 1a Graded-
17250 -10
FIBER OPTIC CABLE DISTRIBUTION SUBSYSTEM
Caltrain Standard Specifications
lndex Multimode Optical Fibers." These fibers shall have the same
specified performance and geometry values as noted below:
2.
All fibers in the cable shall be usable and meet required specifications.
3.
Each optical fiber shall be sufficiently free of surface imperfections and
inclusions to meet the optical, mechanical, and environmental
requirements of this specification.
4.
Each optical fiber shall consist of a germanium-doped silica core
surrounded by a concentric glass cladding. The fiber shall be a matched
clad design.
The attenuation specification shall be a maximum value for each cabled
fiber at 23 ± 5 degrees C on the original shipping reel.
5.
6.
7.
Geometry:
a.
Core Diameter 62.5 ± 3.0um
b.
Core Non-Circularity ≤ 5 percent
c.
Cladding Diameter 125.0 ± 2.0um
d.
Cladding Non-Circularity < 2.0 percent
e.
Core-to-Cladding Concentricity ≤ 3.0um
f.
Coating Diameter 245 ± 5um
g.
Colored Fiber Nominal Diameter 253 – 259um
Optical:
a.
b.
c.
September 30, 2011
Cabled Fiber Attenuation
i.
850 nm < 1.0 dB/km
ii.
1300 nms ≤ 3.5 dB/km
Point discontinuity
i.
850 nm < 0.2 dB
ii.
1300nm ≤0.2 dB
Macrobend Attenuation
i.
Turns: 100; Mandrel OD - 75 ± 2 mm, < 0.5 dB at 850
nm
ii.
Turns: 100; Mandrel OD - 75 ± 2 mm, < 0.5 dB at
1300nm
17250 -11
FIBER OPTIC CABLE DISTRIBUTION SUBSYSTEM
Caltrain Standard Specifications
d.
Cabled Effective Bandwidth Modal
850 nm, > 385 MHz/km
8.
9.
IEEE 802.3 GbE Distance
a.
1000BASE-SX Window (850 nm), up to 500m
b.
1000BASE-LX Window (1300 nm), up to 1000m
OFL Bandwidth
a.
850 nm, > 200 MHz/km
b.
1300 nm, > 500 MHz/km
10.
Numerical Aperture 0.275 ± 0.015
11.
Mechanical Specifications:
a.
Each optical fiber shall be proof tested by the fiber manufacturer
at a minimum of 100 kpsi (0.7 GN/m2).
b.
The fiber shall be coated with a dual layer acrylate protective
coating. The coating shall be in physical contact with the
cladding surface.
c.
Crush Resistance = 10 kN/m (685 Ib/ft) length of cable.
d.
Cable Outside Diameter < 0.65 inch
e.
Weight per 1000 linear foot < 160lbs
f.
Minimum Bending Radius
g.
h.
i.
Installation, 15X Diameter
ii.
Static, 12X Diameter
Temperature (Operational)
i.
-30 degrees C (-22 degrees F) to +60 degrees C (140
degrees
ii.
Continuous operation at -30 degrees C (-22 degrees F)
without cracking or becoming brittle
Temperature (Storage)
i.
i.
September 30, 2011
-40 degrees F to +158 degrees F on reel
Humidity @ 0 to 100 percent, inclusive
17250 -12
FIBER OPTIC CABLE DISTRIBUTION SUBSYSTEM
Caltrain Standard Specifications
j.
2.02
Tensile Strength
i.
Installation @ 2,700 N (600 Ibf)
ii.
Static @ 890 N (200 Ibf)
D.
Single-mode station distribution fiber optic cable will be Superior Essex
#110243T01 or Engineer approved equal.
E.
Multi-mode station distribution fiber optic cable will be Superior Essex
#130246G01 or Egnineer approved equal.
FIBER CONNECTORS AND PASSIVE COMPONENTS
A.
B.
Fiber Connectors:
1.
FDP connectors shall be SC and LC connector type (as required). SCtype connectors shall be the preferred connector for all terminations and
equipment interfaces. LC connectors are typically used by the fiber optic
connections to the modern Ethernet switches.
2.
When available network products use connectors other than SC-type,
optical patch cables shall be provided with the corresponding non-SCtype connector on the equipment end, and the SC-type connector on the
distribution panel end. Example: SC-to-ST patch cord.
3.
Optical parameters of the connectors shall meet the requirements of
EIA/TIA-568.
4.
SC-type fiber single-mode connectors shall be Hubbell FCSCSQ or
approved Equal. SC-type and LC-type fiber connectors and ports for
single-mode will be colored yellow. If multi-mode equipment is used, SCtype and LC-type fiber connectors and ports for multi-mode shall be
colored orange. Where used, LC-type Single mode connectors shall be
Hubbell #FCLCSM or Engineer approved equal.
5.
Where used, SC-type fiber Multi-mode connectors shall be Hubbell #
#FCSCMQ or approved Equal. Where used, LC-type fiber Multi-mode
connectors shall be Hubbell #FCLCMM or Engineer approved equal.
Fiber Slack Enclosures:
1.
Enclosures shall be NEMA-12 type with hinged cover and securing
mechanism.
2.
Enclosures shall be sized for 100 feet of cable slack.
3.
Hardware
September 30, 2011
a.
Hooks shall be provided to hold cable slack, with coils of
required bend radius.
b.
Velcro ties to restrain cable shall be utilized.
17250 -13
FIBER OPTIC CABLE DISTRIBUTION SUBSYSTEM
Caltrain Standard Specifications
C.
Fiber Distribution Enclosure:
1.
2.
D.
Enclosure
a.
The enclosure shall house the splice shelf and connector sleeve
panels for all optical connections but as a minimum shall provide
48 connections for Single Mode and 48 connections for Multimode fibers.
b.
All OSP cable jackets and central strength members shall be
secured to relieve strain.
c.
The enclosure shall be mountable in a standard 19” rack and be
no more than 3 rack units high.
Fiber enclosure will be Hubbell #FCR350SE or Engineer approved equal.
Fiber Distribution Panels:
1.
Distribution panels shall be a complete system of components by a single
manufacturer.
2.
Rack mountable connector housings shall be available for crossconnecting or inter-connecting purposes. The units shall provide for
direct connecting and pigtail splicing.
3.
Housings shall be mountable in an EIA-310 compatible 18.3 inch rack
(19 inch EIA). The unit shall meet the design requirements of TIA-568.
4.
Molded plastic parts shall meet flammability requirements of UL 94 V-0.
5.
The connector housings shall have a labeling scheme that complies with
TIA/EIA-606. The housing shall incorporate labeling via an adhesive
backed label and a retractable sliding label panel that pulls out from the
bottom front of the housing.
6.
Housings shall be manufactured using 16-gauge aluminum and shall be
finished with a Two-Tone Gunmetal Grey and/or anodized silver for
durability. Installation fasteners shall be included and shall be black in
color.
7.
The unit shall be capable of connectorization and jumper management.
The
unit
shall
be
capable
of
splicing
or
combination
connectorization/splicing with the use of an additional splice tray kit.
8.
Fiber Cable Routing: The Unit shall have a fiber routing guide platform
located in the rear of the housing. The fiber routing guide platform shall
be removable using two plunger style latches so that room can be made
for an optional splice tray kit.
9.
Jumper Routing:
September 30, 2011
17250 -14
FIBER OPTIC CABLE DISTRIBUTION SUBSYSTEM
Caltrain Standard Specifications
10.
a.
The unit shall have a hinged top jumper management panel
capable of locking in the horizontal or vertical position. When
the top panel is locked in the horizontal position, it shall act as a
jumper routing area in the top front of the housing and shall
enclose the top of the housing.
b.
When the hinged panel of the unit is locked in the vertical
position it shall serve as a horizontal jumper management panel
capable of routing jumpers out of the top of the housing. Total
height of the housing shall be 5U or less.
Fan-Out Devices:
a.
Provisions for mounting up to 12 fiber fan-out devices shall be
incorporated into the housing via a removable slack storage
platform in the rear of the housing.
b.
Splice capacity shall be 12 splice trays.
11.
Units shall include a clamshell-type cable clamping mechanism to provide
cable strain relief. The cable clamp shall accept one cable from 0.37
inches-1.12 inches in diameter. The cable clamp mechanism shall also
handle multiple smaller fiber count cables when used with a multiple
cable insert. The total cable capacity per clamp shall be five cables (0.4
inches) OD when used with the multiple cable insert. Housing cable
clamp capacity shall be two clamps. Additional cable clamps shall be
available as an accessory kit.
12.
The housing shall have four grommet openings for cable entry in the
rear of the housing. The unit shall have two removable panels on both
the left and right rear of the housing if more than four cable entries are
required.
13.
Front and rear doors of the connector housings shall be hinged and
removable for ease of cable installation.
14.
Access Doors:
a. The front doors shall be made from tinted polycarbonate.
b. Front and rear doors shall utilize a single slide latch to provide ready
access and closing. An opening shall be provided in the front and
rear doors so that an optional key lock kit may be used. The
opening shall be filled with a removable plastic insert so that dust
may not enter if the optional lock kit is not used. There shall be a
removable retaining bracket to prevent the door from being
unintentionally slid off the hinges.
15.
September 30, 2011
The housing shall accommodate the future installation of LC, SC, ST, FC,
D4, or MTRJ, type connector modules. Each module shall provide twelve
connector sleeves.
17250 -15
FIBER OPTIC CABLE DISTRIBUTION SUBSYSTEM
Caltrain Standard Specifications
16.
E.
F.
Splice Shelf:
1.
The splice shelf shall accept slide in/out splice trays for a maximum
number of connectors and for the fiber types to be installed.
2.
Each splice tray shall restrain and protect fusion or mechanical splices.
3.
The splice tray shall hold 12 fusion splices and will be Hubbell
#STRAY12F or Engineer approved equal.
Connector Sleeve:
1.
Connector sleeves shall be the SC-type (or LC type, if required). The
connector sleeve shall meet TIA-568-B.3 requirements when connecting
mated pairs.
2.
The FDP shall be fully populated with connector sleeves.
3.
Dust Caps shall be provided for all sleeves.
4.
Loss across connection shall not exceed the following, with optical
attenuators removed:
5.
G.
2.03
The FDP will be Hubbell #FCR525SPR or Engineer approved equal. FDP
adapter panel with 6 SC-type (or LC-type, if required) fiber bulkhead
connectors will be Hubbell #FSPSC6 (or FSPLC6, if required) or Engineer
approved equal. Adapter panels used for single-mode fiber will have
yellow SC-type (or LC-type, if required) bulkhead ports. Adapter panels
used for multi-mode fiber will have orange SC-type (or LC-type, if
required) bulkhead ports.
a.
Single Mode: 0.5 db
b.
Multi-Mode: 0.5 db
The FDP sleeves shall be capable of accepting optical attenuators as
required for maintaining the Optical Loss budget.
Slack Retention:
1.
Slack in pigtails and patch cords shall be neatly coiled and retained such
that the minimum-bending radius shall not be exceeded.
2.
Slack shall be sufficient for accessing splice shelves and connectors.
OPTICAL FIBER PATCH CORDS AND PIGTAILS
A.
Patch cords and pigtails shall be cable assemblies consisting of flexible optical
fiber cable with SC (or LC, if required) compatible connectors. Patch cords shall
be complete factory fabricated assemblies from manufacturer's standard product
lines. Fiber optic jumper cables shall meet the following requirements.
September 30, 2011
17250 -16
FIBER OPTIC CABLE DISTRIBUTION SUBSYSTEM
Caltrain Standard Specifications
B.
C.
D.
E.
2.04
Patch Cord Assemblies:
1.
The cable construction shall allow a small bend radius for installation in
space-constrained areas. The cable shall contain a dielectric strength
member and a protective outer jacket.
2.
The Patch Cord shall comply with the requirements of TIA-568-B.3.
Connectors:
1.
One SC-type (or LC-type, if required) duplex connector shall be provided
on Patch cords.
2.
One SC-type (or LC-type, if required) simplex connector shall be
provided on pigtails, with the other end prepared for splicing.
3.
SC-type (or LC-type, if required) connectors used for single-mode fiber
will be colored yellow. SC-type (or LC-type, if required) connectors used
for multi-mode fiber will be colored orange.
Fiber Cable:
1.
Patch cords and pigtails shall utilize a two-fiber zip-cord type jacketed
cable, in lengths required to meet minimum bend radius while connected
and routed through cable management hardware but no less than 6 feet
in length. The cable jacket color shall be orange for multi-mode and
yellow for single mode cable. The fiber core size shall also be identified
on the outer jacket.
2.
The optical fiber shall meet the same characteristic requirements of the
distribution panel terminated cable to which it mates.
3.
Tensile strength of the jacketed cable shall be greater than or equal to
20 lbs.
Signle-mode pigtails with SC-type (or LC-type, if required) connector on one end
and the other end bare fiber, 3 meters length, shall be Hubbell #FPSCS3SM (or
Hubbell #FPLCC3SM, if required) or approved equal. Where used, multi-mode
pigtails with SC-type (or LC-type, if required) connector shall be Hubbell
#FPSCS3MM (or Hubbell #FPLCS3MM, if required) or Engineer approved equal.
INNERDUCT
A.
Constructed of flame retardant PVC or FCP material and shall meet the following
flammability requirements:
1.
OSP, inside building horizontal (no more than 50 feet from the point of
entrance), and inside building riser inner-duct shall meet the UL 2024
(raceways) flame test.
2.
Inner-duct installed in any air plenum environment shall meet NFPA 2622002.
September 30, 2011
17250 -17
FIBER OPTIC CABLE DISTRIBUTION SUBSYSTEM
Caltrain Standard Specifications
2.05
B.
Inner-duct shall have smooth exterior and interior wall, and semi-rigid
construction.
C.
Inside building horizontal and riser inner ducts shall be flexible and corrugated
type.
D.
Compatible with the fiber optic cable installed within.
E.
Inner diameter shall be 1 inch minimum.
F.
Couplers, if used, shall not reduce the inside diameter of the inner-duct.
G.
All unused inner-duct shall be preinstalled with lubricated pull tape or line.
H.
Inner-duct used to house single-mode fiber cable will be colored yellow. Innerduct used to house multi-mode fiber cable will be colored orange.
WIRE PULLING LUBRICANT
A.
2.06
Wire Pulling Lubricant shall have the following characteristics:
1.
Polymer-based
2.
Average Coefficient of Friction: ≤ 0.055
3.
Temperature Range: -28 degrees F -180 degrees F
4.
Compatible with all cable types
AIR BLOWN FIBER OPTIC SYSTEMS
A.
General Fiber Specifications:
1.
All fibers in the bundle must be usable and meet required specifications.
2.
Each optical fiber shall be sufficiently free of surface imperfections and
inclusions to meet the optical, mechanical, and environmental
requirements of this specification.
3.
Each optical fiber shall consist of high-grade silica, doped as necessary to
achieve the required light guiding properties. The fiber shall be a
matched clad, step-index design.
4.
The fiber shall be coated with a dual layer of ultra-violet cured acrylate
resin protective coating. The coating shall be in physical contact with
the cladding surface.
5.
The attenuation specification shall be a maximum value for each bundled
fiber at 23 ± 5 °C on the original shipping reel.
6.
The fibers will be contained in a soft inner acrylate layer, an outer harder
layer which protects the fibers from damage, and a low friction layer that
assists in improved blowing distance, typically in excess of 1000 meters.
September 30, 2011
17250 -18
FIBER OPTIC CABLE DISTRIBUTION SUBSYSTEM
Caltrain Standard Specifications
7.
B.
Fiber bundle units will be available in a range of lengths up to 6000
meters.
The main optical, geometrical, and physical characteristics will be compliant with
ITU-T Rec. G.652 C/D for Low Water-peak Single-mode Fiber.
1.
2.
Geometry Standards:
a.
Cladding Diameter (µm) = 125.0 ± 0.7
b.
Core Concentricity (µm) ≤ 0.84
c.
Cladding Non-Circularity ≤ 1.0 %
d.
Mode Field Diameter @ 1310 nm (µm) = 8.8 – 9.6
e.
Effective Area, Aeff (Characterized): (µm2) = 72
f.
Coating Concentricity (µm) ≤ 12.0
Optical Standards:
a.
Cabled Fiber Attenuation @ 1310 nm (dB/km) ≤ 0.38
b.
Cabled Fiber Attenuation @ 1550 nm (dB/km) ≤ 0.26
c.
Point discontinuity @ 1550 nm (dB) ≤ 0.1
d.
Attenuation at 1383 nm (dB/km) ≤ 0.35
e.
Attenuation Uniformity over 2km (dB/km) ≤ 0.05
f.
Dispersion Slope @ ps/(nm2.km) ≤ 0.089
g.
Cable Cutoff Wavelength ( λccf ) (nm) ≤ 1480
h.
Total Dispersion (ps/(nm•km)
1285 - 1330 nm ≤ 3.5
1550 nm ≤ 18.0
C.
i.
Cabled Polarization Mode Dispersion ( ps/km ) ≤ 0.5
j.
Water Peak Attenuation @ 1383+/- 3 nm; ≤ 2.1 dB/km
Environmental and Mechanical Tests and Specifications:
1.
Operation / Storage -10°C to +60°C yields ≤ 0.07 db/km @ 1310 and
1550 nm.
2.
Condensation tested -10°C to +65°C @ 93% RH for 24 hours x 10 yields
≤ 0.07 db/km @ 1310 and 1550 nm.
September 30, 2011
17250 -19
FIBER OPTIC CABLE DISTRIBUTION SUBSYSTEM
Caltrain Standard Specifications
2.07
3.
Water immersion test at +20°C for 2000 hours yields ≤ 0.07 db/km @
1310 and 1550 nm.
4.
Cold tested at -20°C for 96 hours yields ≤ 0.07 db/km @ 1310 and 1550
nm.
5.
Each optical fiber shall be proof tested by the fiber manufacturer at a
minimum of 100 kpsi (0.7 GN/m2).
6.
Bend tested @ 40 mm (2 & 4 fibers) or 60 mm (8 fibers) yields no
change in attenuation after test.
7.
Aged Bend tested (60°C for 1000 hours) 40 mm (2 & 4 fibers) or 60 mm
(8 fibers) yields no change in attenuation after test.
8.
Tensile Strength tested @ 1W N (9.81x mass of 1km) ≤ 0.4% (max fiber
strain)
9.
12 Fiber Outside Diameter ≤ 1.3 mm
10.
12 Fiber Weight ≤ 1.5 g/m
11.
12 Fiber Blowing Distance 1000m typical
12.
12 Fiber Breakout 8 minutes typical
TECHNICAL SPECIFICATIONS FOR AIR BLOWN FIBER DUCT
A.
B.
C.
Air blown fiber tube installed in existing duct, conduit, or inside buildings will
meet the following criteria:
1.
Tubes will be low friction HDPE in small diameters for air blown fiber
tubes up to 12 fibers per tube.
2.
Each 12-fiber primary tube will have an outside diameter (O/D) of 5 mm.
A secondary HDPE fiber duct will house multiple primary 5 mm fiber tubes with
the following specifications:
Fiber Capacity
O.D (mm)
Nominal Weight (g/m)
2 x 5mm tubes (24 fibers)
12.8-13.8
78
4 x 5mm tubes (48 fibers)
14.8-16.5
116
7 x 5mm tubes (84 fibers)
17.8-19.4
159
12x5mm tubes (144 fibers)
23.0-24.8
234
24x5mm tubes (288 fibers)
32.3-34.4
422
The secondary multi-tube duct will include a moisture barrier aluminum shield
and outer polyethylene sheath. A ripcord will be included for easy cable access.
The following shall apply to all secondary multi-tube assemblies:
September 30, 2011
17250 -20
FIBER OPTIC CABLE DISTRIBUTION SUBSYSTEM
Caltrain Standard Specifications
D.
E.
F.
1.
Maximum tensile strength (N) = 1W; tested in accordance with IEC
60794-1-2 Method E1. There will be no permanent deformation of the
primary or secondary assemblies after an applied load of 1.0
(spec.weight kg/km) N at 20 mm/minute.
2.
The Crush Rating (KN) = 1; tested in accordance with IEC 60794-1-2
Method E3. There will be no permanent deformation of the primary
assemblies greater than 0.5 mm after a maintained load of 1KN for 1
minute.
3.
The minimum bend radius (mm) = 12 x diameter
4.
Stress crack resistance will be tested in accordance with BS6469 Section
99.1 with chemical Caflon CF30.
5.
Individual fiber tubes will be opaque or translucent for fiber visibility.
6.
Secondary multi-tube duct will be available on drums up to 3000m in
length.
Air blown fiber tube installed outside, direct bury, will meet the following criteria:
1.
Tubes will be low friction HDPE in small diameters for air blown primary
fiber tubes up to 12 fibers per tube.
2.
Each 12-fiber primary tube will have an outside diameter (O/D) of 5 mm.
A secondary HDPE fiber duct will house multiple primary 5 mm fiber tubes with
the following specifications:
Fiber Capacity
O.D (mm)
Nominal Weight (g/m)
2 x 5mm tubes (24 fibers)
11.0-13.2
142
4 x 5mm tubes (48 fibers)
18.1-22.3
204
7 x 5mm tubes (84 fibers)
21.6-23.3
278
12x5mm tubes (144 fibers)
28.2-29.5
479
24x5mm tubes (288 fibers)
37.8-39-1
755
The secondary multi-tube duct will include a moisture barrier aluminum shield
and two (2) heavy duty outer polyethylene sheath layers. A ripcord will be
included for easy cable access. The following shall apply to all secondary multitube assemblies:
1.
Maximum tensile strength (N) = 1W; tested in accordance with IEC
60794-1-2 Method E1. There will be no permanent deformation of the
primary or secondary assemblies after an applied load of 1.0
(spec.weight kg/km) N at 20 mm/minute.
2.
The Crush Rating (KN) = 2; tested in accordance with IEC 60794-1-2
Method E3. There will be no permanent deformation of the primary
September 30, 2011
17250 -21
FIBER OPTIC CABLE DISTRIBUTION SUBSYSTEM
Caltrain Standard Specifications
assemblies greater than 0.5 mm after a maintained load of 2 KN for 1
minute.
G.
H.
3.
The minimum bend radius (mm) = 12 x diameter.
4.
Stress crack resistance will be tested in accordance with BS6469 Section
99.1 with chemical Caflon CF30.
5.
Individual fiber tubes will be opaque or translucent for fiber visibility.
6.
Secondary multi-tube duct will be available on drums up to 3000 m in
length.
Air blown fiber tube installed outside, direct bury, armored, will meet the
following criteria:
1.
Tubes will be low friction HDPE in small diameters for air blown primary
fiber tubes up to 12 fibers per tube.
2.
Each 12-fiber primary tube will have an outside diameter (O/D) of 5 mm.
3.
A secondary HDPE fiber duct will house multiple primary 5 mm fiber
tubes with the following specifications:
Fiber Capacity
O.D (mm)
Nominal Wt (g/m)
2 x 5mm tubes (24 fibers)
11.9
353
4 x 5mm tubes (48 fibers)
18.9
536
7 x 5mm tubes (84 fibers)
21.9
630
12x5mm tubes (144 fibers)
27.1
756
24x5mm tubes (288 fibers)
36.5
1071
The secondary multi-tube duct will include an inner polyethylene sheath layer, a
corrugated armored layer, and an outer heavy duty polyethylene sheath layer. A
ripcord will be included for easy cable access. The following shall apply to all
secondary multi-tube assemblies:
1.
Maximum tensile strength (N) = 1W; tested in accordance with IEC
60794-1-2 Method E1. There will be no permanent deformation of the
primary or secondary assemblies after an applied load of 1.0
(spec.weight kg/km) N at 20 mm/minute.
2.
The Crush Rating (KN) = 2; tested in accordance with IEC 60794-1-2
Method E3. There will be no permanent deformation of the primary
assemblies greater than 0.5 mm after a maintained load of 3KN for 1
minute.
3.
The minimum bend radius (mm) = 12 x diameter.
September 30, 2011
17250 -22
FIBER OPTIC CABLE DISTRIBUTION SUBSYSTEM
Caltrain Standard Specifications
2.08
4.
Stress crack resistance will be tested in accordance with BS6469 Section
99.1 with chemical Caflon CF30.
5.
Individual fiber tubes will be opaque or translucent for fiber visibility.
6.
Secondary multi-tube duct will be available on drums up to 3000m in
length.
SOURCE QUALITY CONTROL - CABLE FACTORY TESTING
A.
Factory tests shall be performed in accordance with TIA/EIA -455.
B.
Cable shall be tested on-reel prior to shipment.
C.
End to end loss shall be recorded for each fiber at 1,310 nm, 1,550 nm and
1,625 nm (for Single-mode).
D.
End to end loss shall be recorded for each multi-mode fiber at 850nm, and 1,300
nm.
E.
OTDR with hardcopy record shall be provided for each single mode fiber, at
1,300 nm, 1,550 and 1,625 nm.
F.
OTDR with hardcopy record shall be provided for each multi-mode fiber, at 850
nm and 1,300 nm.
Polarized Modal Dispersion (PMD) for each single mode fiber shall be measured
using a PMD analyzer and polarized light source.
G.
H.
Chromatic optical dispersion shall be tested for each single mode fiber.
I.
Certified copies of tests results shall be submitted to the Engineer as described in
these specifications 14 days after completion of each test.
PART 3- EXECUTION
3.01
INSTALLATION
A.
All optical cable installation shall be accomplished in accordance with the
approved plan.
B.
All horizontal and backbone LAN fiber optic cable shall be installed in inner-duct.
OSP fiber optic cable shall be installed in inner-duct at locations outside of the
wayside trough as indicated in the Contract Drawings, through manholes, and
through duct bank conduits. All duct bank four inch communications conduits
serving fiber optic cable shall contain four 1 inch inner-ducts each. No more
than one OSP fiber optic cable shall be installed in a single inner-duct. The
inner-duct shall be installed without coils or twists.
C.
Pull locations shall be selected to protect the cable on the reel and in slack loops.
Be responsible for protecting cable after working hours where cable installation is
not completed during a single shift. Cables damaged due to Contractor's
negligence while installing cable shall be replaced.
September 30, 2011
17250 -23
FIBER OPTIC CABLE DISTRIBUTION SUBSYSTEM
Caltrain Standard Specifications
3.02
D.
Pull lengths shall be designed to allow a 20 percent margin in cable tensile
strength. Do not exceed the lesser of 80 percent of the cable's maximum tensile
rating or 600 lbs during installation. No residual tension shall remain on the
cable after installation except that due to the cable's weight in the vertical rise.
Wire Pulling Lubricant shall be used to reduce tension on the cable during the
installation process.
E.
If a winch or pulling machine is used during installation, a dynamometer shall be
used to monitor the tension on the cable. The dynamometer shall be certified as
calibrated and shall hold the peak value of the cable pull. The peak value shall
be recorded and forwarded to the Engineer as part of the installation test data
submittals.
F.
The maximum vertical rise shall be defined as the distance over which the cable
is self-supporting. Cable strain relief shall be used at the top of each vertical rise
and no less than every time that 80 percent of vertical rise rating of the cable is
exceeded.
G.
Do not exceed the cable's minimum bend radius for cable under tension or long
term installation/storage.
H.
Continuity of cable shall be maintained between termination or splice locations
shown on the Contract Drawings. Additional splices shall not be allowed without
the prior written Engineer approval.
I.
Notify the Engineer in writing at least 48 hours in advance of installation of each
section of optical cable.
J.
All cable entrance openings in equipment enclosures, houses, rooms and junction
boxes shall be sealed with either a compression type fitting or pliable sealing
compound after the cable is in place. Sealing compounds for rooms, houses,
walls, or other partitions shall be fire retardant per ASTM E-814. Sealing
compound shall be used to seal the area around cable where the cable emerges
from the end of a conduit, pipe, or duct bank. All spare conduits shall be sealed
or plugged in an Engineer approved manner.
TERMINATION
A.
Slack in Fiber Slack Enclosures (FSE's) shall be carefully coiled in order to avoid
violating the short and long term minimum bend radius. Supply a minimum of
150 feet of slack at each termination of the cable inside the FSE.
B.
Slack in Fiber Distribution Panels (FDP's) shall be restrained and shall be
sufficient for strain relief.
C.
The central strength member of cable shall be attached to the FDP. The outer
jacket of cable shall be attached to the FDP with a cable clamp.
D.
All fiber optic splices shall be fusion splices. Perform splicing at fiber slack
enclosures only for the purposes of passing an optical connection through a
Communications House.
Fusion splicing shall be performed by qualified
personnel utilizing a splicer equipped with Local Injection and Detection (LID) to
September 30, 2011
17250 -24
FIBER OPTIC CABLE DISTRIBUTION SUBSYSTEM
Caltrain Standard Specifications
optimize splices. The loss across each spliced fiber shall be less than or equal to
0.04 db.
3.03
E.
All fiber optical terminations at communications houses and wayside facilities
shall be field or factory terminated.
F.
Notify the Engineer in writing at least one week in advance of terminating each
section of optical cable.
G.
Where armored cable is utilized, the armor shall be grounded to the
communications room ground bus at one termination location.
FIELD QUALITY CONTROL
A.
Cable Factory Tests: See Source Quality Control herein.
B.
Cable Plant Field Tests:
1.
Tests shall be performed after installation is complete.
2.
One week advance notice to the Engineer shall be provided.
3.
Optical attenuation from FDP to FDP shall be recorded.
4.
Every fiber optic cabling link shall be tested in accordance with the field
test specifications defined by the TIA-568-B.3 (or by the required
network application standards) whichever is more demanding.
5.
TIA-568-B.3, shall be used to define the passive cabling network, to
include cable, connectors, and splices (if present), between two optical
fiber patch panels (connecting hardware). This TIA document shall be
used to describe all applicable link segments. Tests shall include the
representative connector performance at the connecting hardware
associated with the mating of patch cords but not the performance of
the connector at the interface with the test equipment.
6.
All of the cabling links installed shall be tested and shall pass the
requirements of the standards mentioned in above. Any failing link shall
be diagnosed and corrected prior to the system acceptance. The
corrective action shall be followed with a new test to prove that the
corrected link meets the performance requirements. The final and
passing result of the tests for all links shall be provided in the test results
documentation in accordance with Section 3.04 below.
7.
Trained technicians who have successfully attended a required training
program and have obtained a certificate, as proof thereof shall be used
to execute the tests. These certificates may have been issued by any of
the following organizations or an equivalent organization:
a.
September 30, 2011
The manufacturer of the fiber optic cable and/or the fiber optic
connectors
17250 -25
FIBER OPTIC CABLE DISTRIBUTION SUBSYSTEM
Caltrain Standard Specifications
The manufacturer of the test equipment used for the field
certification
c.
Training organizations authorized by BiCSI (Building Industry
Consulting Services International), or by the ACP (Association of
Cabling Professionals™).
8.
Field test instruments for multimode fiber cabling shall meet the
requirements of TIA-526-14. The light source shall meet the launch
requirements of TIA-455-78. This launch condition can be achieved
either within the field test equipment or by use of an external mandrel
wrap (as described in clause 11 of TIA-568) with a Category 1 light
source. Field test instruments for single mode fiber cabling shall meet
the requirements of TIA-526-7.
9.
The test instrument calibration date shall be within the calibration period
recommended by the vendor in order to achieve the vendor specified
measurement accuracy.
10.
The fiber optic launch cables and adapters shall be of high quality and
the cables shall not show excessive wear resulting from repetitive coiling
and storing of the test instrument interface adapters.
11.
The Pass or Fail condition for the link-under test is determined by the
results of the required individual tests.
A Pass or Fail result for each parameter is determined by comparing the
measured values with the specified test limits for that parameter.
12.
C.
b.
13.
An Engineer representative shall be invited to perform field-testing. The
representative shall be notified of the start date of the testing phase five
business days before testing.
14.
The Engineer’s representative shall select up to five percent of the links
installed. The representative (or his authorized delegate) shall test these
selected links and the results are to be stored in accordance with the
prescriptions in this Section. The results obtained shall be compared to
the data provided by the Contractor. If the sample results differ in terms
of the pass/fail determination, repeat testing of the affected link under
observation of the Engineer.
Cable Plant Performance Test Parameters:
1.
In compliance to TIA 568, the single performance parameter for fieldtesting of fiber optic links shall be link attenuation (insertion loss).
2.
The link attenuation shall be calculated by the following formulas
specified in ANSI/TIA/EIA 568:
September 30, 2011
a.
Link Attenuation = Cable Attenuation + Connector Attenuation +
Splice Attenuation
b.
Cable Attenuation (db) = Attenuation Coefficient (db/km) x
Length (km)
17250 -26
FIBER OPTIC CABLE DISTRIBUTION SUBSYSTEM
Caltrain Standard Specifications
c.
Connector Attenuation (db) = number of connector pairs x
connector loss (db). Maximum allowable connector loss = 0.75
db
d.
Splice Attenuation (dB) = number of splices (S) x Splice loss
(db). Maximum allowable splice loss = 0.3 db
e.
The values for the Attenuation Coefficient are listed below:
i.
Single mode (outside plant), 1310nm: 0.5 db/km
ii.
Single mode (outside plant), 1550nm: 0.5 db/km
iii.
Multimode, 850 nm: 3.5 db/km
iv.
Multimode, 1300 nm: 1.5 db/km
f.
Link attenuation shall not include any active devices or passive
devices other than cable, connectors, and splices, i.e., link
attenuation shall not include such devices as optical bypass
switches, couplers, repeaters, or optical amplifiers.
g.
Test equipment that measures the link length and automatically
calculates the link loss based on the above formulas is preferred.
3.
The above link test limits attenuation is based on the use of the One
Reference Jumper Method specified by TIA-526-7, Method A.1; or the
equivalent method. The user shall follow the procedures established by
these standards or application notes to accurately conduct performance
testing.
4.
Multimode distribution links shall be tested at 850 nm and 1300 nm in
accordance with ANSI/ElA/TIA-526-14. Because backbone length and
the potential number of splices vary depending upon site conditions, the
link attenuation equation shall be used to determine limit (acceptance)
values.
5.
Single-mode backbone links shall be tested at 1310 nm and 1550 nm in
accordance with TIA-526-7, Method A.1, One Reference Jumper or the
equivalent method. All single-mode links shall be certified with test tools
using laser light sources at 1310 nm and 1550 nm.
6.
Links to be used with network applications that use laser light sources
(under-filled launch conditions) shall be tested with test equipment
based on laser light sources. This rule shall be followed for cabling
systems to support Gigabit Ethernet. Gigabit Ethernet only specifies
laser light sources. For Gigabit Ethernet compliant certification (IEEE Std
802.3Z application), use test equipment that uses a VCSEL (Vertical
cavity surface emitting laser) at 850 nm (compliant with 1000BASESX)
and a FP laser at 1310 nm (compliant with 1000BASELX).
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FIBER OPTIC CABLE DISTRIBUTION SUBSYSTEM
Caltrain Standard Specifications
7.
D.
Each fiber optical link terminated with an optical adapter system that
does not impose a transmission direction because the adapters are not
or cannot be ganged shall be tested and documented in both directions
since the direction of the signal transmission cannot be predicted at the
time of installation.
OTDR Testing:
1.
All cables shall be OTDR tested at 1310 nm and 1550 nm (for Singlemode) operating wavelengths for anomalies and to ensure uniformity of
cable attenuation and connector insertion loss.
2.
OTDR tests shall be performed utilizing a pulse suppressor such that the
FDP termination shall be shown.
3.
All OTDR testing procedures and field test instruments shall comply with
applicable requirements of:
a.
TIA 455-78
b.
TIA 455-133
4.
Each fiber link and channel shall be tested in one direction.
5.
A launch cable shall be installed between the OTDR and the first link
connection.
6.
A receive cable shall be installed after the last link connection.
7.
Optical Return Loss (ORL) for each link shall be measured.
8.
Fiber Length shall be measured
9.
Test Results:
a.
Reflective events shall not exceed -40 dB
b.
Connections shall not exceed 0.75 dB of attenuation
c.
Non-reflective events (splices) shall not exceed 0.3 db
d.
Point discontinuities shall not exceed 0.1 db
e.
ORL shall be less than -30 dB
10.
OTDR Test results shall include OTDR link and channel traces and event
tables at the required wavelength(s) and the length for each optical fiber
as calculated by the OTDR.
11.
An Optical Spectrum scan of each link shall be performed using an
optical spectrum analyzer and optical switch to examine fiber nonlinear
effects including but limited to Brillouin scattering and four wave mixing
across the fiber's usable light spectrum.
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FIBER OPTIC CABLE DISTRIBUTION SUBSYSTEM
Caltrain Standard Specifications
12.
E.
Polarized Modal Dispersion (PMD) for each link shall be measured using
a PMD analyzer and polarized light source. Total PMD for each link shall
be less than 10 ps.
Cable Plant Test Result Documentation:
1.
The test result information for each link shall be recorded in the memory
of the field tester upon completion of the test.
2.
The test result records saved by the test instrument shall be transferred
into a Windows™-based database utility that allows for the maintenance,
inspection and archiving of these test records. A guarantee shall be
made that these results are transferred to the PC unaltered, i.e., "as
saved in the tester" at the end of each test. The popular 'csv' format
(comma separated, value format) does not provide adequate protection
and shall not be acceptable.
3.
The database records of all fiber shall be stored and delivered on CDROM; this CDROM shall include the software tools required to view,
inspect, and print any selection of test reports.
4.
A paper copy of the test results shall be provided that lists all the links
that have been tested with the following summary information.
5.
September 30, 2011
a.
The identification of the link in accordance with the naming
convention defined in the overall system documentation.
b.
The overall Pass/Fail evaluation of the link-under-test including
the Attenuation worst-case margin (margin is defined as the
difference between the measured value and the test limit value).
c.
The date and time the test results were saved in the memory of
the tester.
General Information to be provided in the electronic data base
containing the test result information for each link:
a.
The identification of site
b.
The overall Pass/Fail evaluation of the link-under-test
c.
The name of the standard selected to execute the stored test
results
d.
The cable type and the value of the ‘index of refraction' used for
length calculations
e.
The date and time the test results were saved in the memory of
the tester
f.
The brand name, model and serial number and calibration data
of the tester
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FIBER OPTIC CABLE DISTRIBUTION SUBSYSTEM
Caltrain Standard Specifications
g.
6.
The revision of the tester software and the revision of the test
standards database in the tester
The detailed test results data to be provided in the electronic database
for each tested optical fiber shall contain the following information.
a.
The identification of the link/fiber in accordance with the naming
convention defined in the overall system documentation.
b.
The insertion loss (attenuation) measured at each wavelength,
the test limit calculated for the corresponding wavelength and
the margin (difference between the measured attenuation and
the test limit value).
c.
The link length shall be reported for each optical fiber for which
the test limit was calculated based on the formulas specified
herein under Cable Plant Performance Test Paragraphs.
END OF SECTION
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FIBER OPTIC CABLE DISTRIBUTION SUBSYSTEM